sometimes it happens by movements like civil rights moment or right to vote for women in this country and sometimes it has to come from topdown change. when that topdown change is perceived to be efficiently enforced, then the exploiter has to adapt. what you see with forms of slavery today there are laws, there are penalties. by in large they are not perceived to be effectively active and enforced so the exploiter does not have to adapt too much or adapt just enough to avoid identification. >> thank you for a stimulating presentation. i want to get your reaction to the idea in general terms that maybe the diagnosis is only as good as the remedy it prescribes. in a particular way of asking that question, i would like to hear you say what your study on the shrimp supply chain suggests about an appropriate remedy for the exploitation that we're seeing there. and secondly, in more conceptual terms, all related to remedies. if you excuse me asking more than one question relating to different parts of your presentation. secondly, whether in conceptual terms it might not make more sense to